need help please

[nos9722]

"need help" i have a 89 gt ported e7 heads ,ported stock intake, 24lb injectors ,24 maf,msd 6al, msd distr,msd timming control,mac headers, b303 cam now, 1.72 rockers, and fuel pump and reg. the problem now is since i put the b303 cam in. the car lost a 1.4 sec with the 150 shot of nos. and 8ths on motor. i do have stock valve springs in.

 

[Celeb]

What cam was in it before? The B cam has a somewhat narrow rpm range. If you're spraying, I'd look for a cam with more duration on the exhaust side for starters.

 

[stanGRR]

"need help" i have a 89 gt ported e7 heads ,ported stock intake, 24lb injectors ,24 maf,msd 6al, msd distr,msd timming control,mac headers, b303 cam now, 1.72 rockers, and fuel pump and reg. the problem now is since i put the b303 cam in. the car lost a 1.4 sec with the 150 shot of nos. and 8ths on motor. i do have stock valve springs in.

maybe you need a dyno tune

 

[nos9722]

the stock ho cam i was thinking i might finely have to change the inake out .

 

[SpartaPerformance]

Intake is a good idea, also if you have auto trans a high stall converter is needed also a higher gear ratio regardless auto or stick.